Insulating Heat Ducts In Attic

L x 16 in.

Insulating heat ducts in attic.

The department of energy claims that the average us home loses hundreds of dollars a year in heating and cooling costs. Purchase duct wrap insulation that complies with the 2009 international energy conservation code iecc standards that specify an r value of 8 for attic ducts and 6 for ducts located anywhere else. Remember a lot of your ductwork is either in your crawlspace or your attic. Proper duct insulation is a major key to ensuring your home s energy efficiency.

Dia x 5 ft. Master flow 14 in. Repeat to insulate the remaining ducts. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct.

Hvac parts accessories. Length ductwork insulation sleeve r 8. Unitherm univest insulation jacket high temperature 25 in. Apply a long strip of foil tape along the seam in the insulation.

Anyway the point of all this is to highlight the fact that you ve got to seal the leaks before you insulate the ducts. Close to 25 of the energy you use to heat and cool your home disappears through leaky ductwork. Insulation blocks the movement of heat but it can t stop air leaks. Wrap the insulation around the duct and then pinch the seam closed.

Our heating and ac ducts are 100 within the thermal envelope in the floor trusses above our insulated basement. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. If the ducts must be located within a vented attic one option for protecting the ducts and helping to minimize heat transfer between ducts and the unconditioned attic is to lay the ducts on the attic floor and cover them with the same blown insulation that is used to cover the attic floor. Do you really want to be breathing the air from those spaces 24 7.

Model f8ds14 27 86. Unfortunately so many houses especially newer homes end up with ductwork running through the attic. Secure the insulation with short strips of foil tape. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.

Heating venting cooling. But our erv ducts stand alone system not tied in w heat pump and 2 jumper ducts for pressure balancing from bedrooms are suspended above the insulation in our vented attic. The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago.